class number
... Sect 3 (Pg. 628-629 ONLY) 17) TRUE FALSE Any wire with an electrical current will also have a magnetic field. 18) TRUE FALSE The electromagnetic field of a wire will point in the same direction as the flow of current in the wire. Sect 4 (Pg. 636-638) 19) Bending a current –carrying wire into a _____ ...
... Sect 3 (Pg. 628-629 ONLY) 17) TRUE FALSE Any wire with an electrical current will also have a magnetic field. 18) TRUE FALSE The electromagnetic field of a wire will point in the same direction as the flow of current in the wire. Sect 4 (Pg. 636-638) 19) Bending a current –carrying wire into a _____ ...
Magnetism
... • Oersted discovered that an electric current causes a magnetic field. • Faraday discovered that if a wire is moved while in a magnetic field, then the magnetic field will cause (induce) an electric current. • This is how electric generators work – Most of the time however, we move the magnet instea ...
... • Oersted discovered that an electric current causes a magnetic field. • Faraday discovered that if a wire is moved while in a magnetic field, then the magnetic field will cause (induce) an electric current. • This is how electric generators work – Most of the time however, we move the magnet instea ...
Slide 1
... the accompanying text in their classes. All recipients of this work are expected to abide by these restrictions and to honor the intended pedagogical purposes and the needs of other instructors who rely on these materials. ...
... the accompanying text in their classes. All recipients of this work are expected to abide by these restrictions and to honor the intended pedagogical purposes and the needs of other instructors who rely on these materials. ...
CHAPTER - 13 MAGNETIC EFFECTS OF ELECTRIC CURRENT CLASS
... The current we get from a battery is a direct current. b) Alternating current (AC) :- A current that reverses its direction periodically is called alternating current. Most power stations in our country produce alternating current. AC changes direction every 1/100 second and its frequency is 50 Hert ...
... The current we get from a battery is a direct current. b) Alternating current (AC) :- A current that reverses its direction periodically is called alternating current. Most power stations in our country produce alternating current. AC changes direction every 1/100 second and its frequency is 50 Hert ...
1 Circuits 2009 Student version
... Most receivers allow the user to connect to “remote” speakers in addition to the main speakers. At the instant represented in the picture, the voltage across the speakers is 6.00 V. Determine (a) the equivalent resistance of the two speakers, (b) the total current supplied by the receiver, (c) the c ...
... Most receivers allow the user to connect to “remote” speakers in addition to the main speakers. At the instant represented in the picture, the voltage across the speakers is 6.00 V. Determine (a) the equivalent resistance of the two speakers, (b) the total current supplied by the receiver, (c) the c ...
Notes-1: Magnetic Fields
... especially if its ________________ is much greater than its _____________. However the magnetic field inside the solenoid is ________________ and _________________________. ...
... especially if its ________________ is much greater than its _____________. However the magnetic field inside the solenoid is ________________ and _________________________. ...
Information Sheet
... • Connector can be used for any combination of bare conductor, copper and aluminum. • Connector can be used for any combination of insulated conductor, copper or aluminum. However, the Tap side is limited to conductors with a maximum O.D. (including insulation) of .528. The following classes of 2/0 ...
... • Connector can be used for any combination of bare conductor, copper and aluminum. • Connector can be used for any combination of insulated conductor, copper or aluminum. However, the Tap side is limited to conductors with a maximum O.D. (including insulation) of .528. The following classes of 2/0 ...
ELECTRICITY AND MAGNETISM The magnetic field created by an
... Atoms become positively charged when they have fewer electrons than protons. They are then called CATIONS. ...
... Atoms become positively charged when they have fewer electrons than protons. They are then called CATIONS. ...
lecture 29 motional emf
... If the rod is to move at a constant speed, an external force must be exerted on it. ! This force should have equal magnitude and opposite direction to the magnetic force: ...
... If the rod is to move at a constant speed, an external force must be exerted on it. ! This force should have equal magnitude and opposite direction to the magnetic force: ...
89GES-II - Directorate General of Shipping
... R1 is bilateral i.e. conducts equally well in either direction. Plot the characteristics for each resistance and determine the current taken from the supply. 4. Prove that in a single stage ideal reciprocating air compressor, when the gas is compressed ...
... R1 is bilateral i.e. conducts equally well in either direction. Plot the characteristics for each resistance and determine the current taken from the supply. 4. Prove that in a single stage ideal reciprocating air compressor, when the gas is compressed ...
Fuses Plugs and Switches
... 1. heat and light as in a light bulb, electric fire or cooker; 2. magnetism as in an electromagnet; 3. chemical changes as in electrolysis and electroplating. Conductors and insulators A material which will allow electricity to flow through it is called a CONDUCTOR and one which will not is called a ...
... 1. heat and light as in a light bulb, electric fire or cooker; 2. magnetism as in an electromagnet; 3. chemical changes as in electrolysis and electroplating. Conductors and insulators A material which will allow electricity to flow through it is called a CONDUCTOR and one which will not is called a ...
Chapter 17
... Generators are not perfectly efficient Not all 100% of the mechanical energy is converted into electrical energy. The efficiency depends on 3 things. 1. I2*R or copper losses in the winding ...
... Generators are not perfectly efficient Not all 100% of the mechanical energy is converted into electrical energy. The efficiency depends on 3 things. 1. I2*R or copper losses in the winding ...
Skin effect
Skin effect is the tendency of an alternating electric current (AC) to become distributed within a conductor such that the current density is largest near the surface of the conductor, and decreases with greater depths in the conductor. The electric current flows mainly at the ""skin"" of the conductor, between the outer surface and a level called the skin depth. The skin effect causes the effective resistance of the conductor to increase at higher frequencies where the skin depth is smaller, thus reducing the effective cross-section of the conductor. The skin effect is due to opposing eddy currents induced by the changing magnetic field resulting from the alternating current. At 60 Hz in copper, the skin depth is about 8.5 mm. At high frequencies the skin depth becomes much smaller. Increased AC resistance due to the skin effect can be mitigated by using specially woven litz wire. Because the interior of a large conductor carries so little of the current, tubular conductors such as pipe can be used to save weight and cost.